TW201834472A - Speaker, loudspeaking device and mobile terminal - Google Patents

Abstract

The present invention discloses a speaker, a loudspeaking device and a mobile terminal. The speaker comprises a frame, a diaphragm and a driving component, wherein the frame has an outer peripheral side wall, an inner circumferential side wall disposed relative to the outer peripheral side wall and a sound hole throughout the outer peripheral side wall and the inner circumferential side wall, a periphery of the diaphragm is circumferentially fixed to the diaphragm, and the driving component comprises a first driving member fixed on the diaphragm and a second driving member fixed to the frame, the first driving member being capable of vibrating relative to the second driving member to drive the vibration of the diaphragm to emit sound waves to and pass the sound waves through the sound hole. The sound hole and the diaphragm are not arranged relatively, thus the frame is provided far away from a side of the diaphragm, with no need to provide an acoustic space, i.e., saving space, and the acoustic resistance of the sound waves emitted by the diaphragm is decreased after the sound waves pass through the sound hole. The user can receive larger sound, which improves the user experience.

Description

Speaker, speaker device and mobile terminal

The present invention relates to the field of electronic devices, and in particular, to a speaker, a speaker device, and a mobile terminal.

At present, the thickness of mobile terminal products is getting thinner and thinner, and the thickness of the speaker cavity is also becoming thinner accordingly. At present, the dynamic coil type speakers are designed with the sound output holes at the bottom of the speaker, and the sound source of the speaker is designed at the top, which results in that the sound output hole is opposite to the sound source. In this structure, the speaker is assembled in the speaker sound cavity. On the one hand, in order to ensure that the thickness of the speaker sound cavity is small, the sound hole at the bottom of the speaker is smaller than the sealing wall of the speaker sound cavity, resulting in sound resistance of the speaker Larger, so that the sound received by the user becomes smaller; on the other hand, in order to ensure that the sound resistance of the speaker is reduced, the sound hole at the bottom of the speaker is larger from the sealing wall of the speaker cavity, resulting in the thickness of the sealed cavity Larger, thus wasting space. As a result, the user cannot obtain a speaker whose acoustic resistance is sufficiently small and saves space in use, which reduces the user experience.

An object of the present invention is to provide a speaker, a speaker device and a mobile terminal that improve user experience.

In order to solve the above technical problem, the present invention provides a speaker, wherein the speaker includes a frame, a diaphragm, and a driving element, the frame has an outer peripheral side wall and an inner peripheral side wall disposed opposite the outer peripheral side wall, and is provided with a penetrating outer peripheral side wall and The sound emitting hole of the inner peripheral side wall, the peripheral edge of the diaphragm is fixedly connected to the frame along the circumferential direction, and the driving element includes a first driving member fixed to the diaphragm and a second driving member fixed to the frame. The driving member may be vibrated relative to the second driving member, so as to drive the diaphragm to vibrate to generate sound waves, and make the sound waves pass through the sound output hole.

The present invention also provides a speaker device, wherein the speaker device includes the speaker described above, the speaker device further includes a box body having a sealed sound cavity, and the speaker is fixed in the sealed sound cavity.

The present invention also provides a mobile terminal, wherein the mobile terminal includes the speaker device described above.

The speaker, loudspeaker and mobile terminal provided by the present invention have a sound hole opened through the outer peripheral side wall toward the inner peripheral side wall of the frame, and the sound wave generated by the vibration of the diaphragm passes through the sound output hole, so that the user receives sound. Because the sound hole is not opposite to the diaphragm, the side of the frame away from the diaphragm does not need to provide sound transmission space, which saves the use space, and the sound wave emitted by the diaphragm passes through the sound hole and the sound resistance is reduced. Smaller, users can receive larger sounds, improving user experience.

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without paying any creative labor belong to the protection scope of the present invention.

In the description of the embodiment of the present invention, it should be understood that the orientation or positional relationship indicated by the terms “thickness” and the like is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than implying The device or element referred to or indicated must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Referring to FIG. 1, the present invention provides a speaker 100. The speaker 100 includes a frame 10, a diaphragm 20, and a driving element 30. The frame 10 has an outer peripheral side wall 11 and an inner peripheral side wall 12 disposed opposite to the outer peripheral side wall 11. The frame 10 is further provided with a sound outlet hole 13 penetrating the outer peripheral side wall 11 and the inner peripheral side wall 12. A peripheral edge of the diaphragm 20 is fixedly connected to the frame 10 in a circumferential direction. The driving element 30 includes a first driving member 31 fixed to the diaphragm 20 and a second driving member 32 fixed to the frame 10. The first driving member 31 can vibrate relative to the second driving member 32 to drive the diaphragm 20 to vibrate and emit sound waves, and to make the sound waves pass through the sound emitting hole 13.

A sound hole 13 is opened through the outer peripheral side wall 11 of the frame 10 toward the inner peripheral side wall 12, and a sound wave generated by the vibration of the diaphragm 30 passes through the sound output hole 13, so that the user receives sound. Since the sound emitting hole 13 is not opposite to the diaphragm 30, the side of the frame 10 away from the diaphragm 30 does not need to provide a sound transmission space, which saves the use space, and the sound waves emitted by the diaphragm 30 pass through the sound. The sound resistance behind the hole is reduced, and the user can receive a larger sound, which improves the user experience.

The frame 10 includes a top end 14 and a bottom end 15 disposed opposite the top end 14. The top end 14 is fixedly connected to the periphery of the diaphragm 20. The end surface of the top end 14 can be adhered to the periphery of the diaphragm 20. The sound output hole 13 is located between the top end 14 and the bottom end 15. The sound output hole 13 may be a circular hole or a bar-shaped hole. The frame 10 may be a plastic part or a metal part.

The diaphragm 20 is provided with a fold 21 between the periphery and the geometric center. The folds 21 extend in a circumferential direction of the diaphragm 20. The folds 21 reduce the tension of the diaphragm 20, so that the diaphragm 20 is more likely to generate deformation vibration in a region near the geometric center. The fold 21 is fixedly connected to the first driving member 31, so that the first driving member 31 can drive the diaphragm 20 to deform. The material of the diaphragm 20 may be paper, fiber, metal, wool, silk or the like.

The first driving member 31 slides relative to the second driving member 32 in a direction substantially parallel to the normal direction of the diaphragm 20. The first driving member 31 can slide back and forth relative to the second driving member 32, so as to drive the region of the diaphragm 20 substantially near the geometric center to vibrate back and forth along the normal direction. When the diaphragm 20 vibrates in a region substantially near the geometric center, the diaphragm 20 drives the airflow to generate sound waves. The sound wave can be radiated to the outside of the frame 10 through the sound emitting hole 13 so as to be received by a user. Since the sound output direction of the sound output hole 13 is substantially perpendicular to the normal direction of the diaphragm 20, that is, the speaker 100 has no sound propagation path in a direction substantially parallel to the normal direction of the diaphragm 20, so the top 14 and bottom of the frame 10 The ends 15 can abut against the external components, respectively, so that the speaker 100 can be stably installed, and the use space is saved.

In this embodiment, the second driving member 32 is at least partially fixed to the inner peripheral side wall 12 of the frame 10. The second driving member 32 is provided with a through hole 33 that is the same as the sound emitting hole 13. The sound waves emitted by the diaphragm 20 are emitted from the outside of the frame 10 through the through hole 33 and the sound output hole 13 in this order.

Further, referring to FIG. 2, the first driving member 31 is a coil. The second driving member 32 is a magnet. After receiving the current signal, the first driving element 31 generates a magnetic field. The direction of the magnetic field generated by the first driving member 31 changes according to the change of the current signal. The second driving member 32 is a permanent magnet, and the magnetic field direction of the second driving member 32 does not change. The first driving member 31 is influenced by the magnetic field of the second driving member 32 under the change of the current signal, and can slide near or away from the second driving member 32 to drive the diaphragm 20 to vibrate. The second driving member 32 includes a first magnet 321 fixed to the inner peripheral side wall 12 and a second magnet 322 located inside the first magnet 321. A distance 323 exists between the first magnet 321 and the second magnet 322. The top of the first driving member 31 is fixedly connected to the fold 21 of the diaphragm 20, and the bottom of the first driving member 31 is received in the space 323. Since the first driving member 31 slides up and down within the interval 323, the thickness of the speaker 100 can be effectively reduced.

In another embodiment, please refer to FIG. 3, the first driving member 31 is a magnet. The second driving member 32 is a coil. The first driving member 31 has a ring shape. The first driving member 31 is fixedly connected to the fold 21 in a circumferential direction. The second driving member 32 is fixed to the inner peripheral side wall 12 in the circumferential direction.

Further, referring to FIG. 4, the speaker 100 further includes a cover plate 40 fixed to the frame 10. The cover plate 40 is disposed opposite to the diaphragm 20, and is formed between the diaphragm 20, the cover plate 40 and the frame 10. The sound emission cavity 50, and the sound output hole 13 penetrates the sound emission cavity 50.

In this embodiment, the first driving member 31 and the second driving member 32 are both located in the sound emitting cavity 50. The second driving member 32 is also fixedly connected to the cover plate 40. The cover plate 40 is disposed opposite to the diaphragm 20, and the cover plate 40 reflects the sound waves emitted from the diaphragm 20, so that the sound waves can be emitted to the outside of the frame 10 through the sound emitting hole 13. In addition, the first driving member 31 and the second driving member 32 are located in the sound emitting cavity 50. The internal space of the sound emitting cavity 50 is fully utilized to effectively reduce the thickness of the speaker 100.

In another embodiment, referring to FIG. 5, the peripheral edge of the diaphragm 20 can be fixed to the inner peripheral side wall 12. The diaphragm 20 divides the inner space of the frame 10 into a first cavity 16 and a second cavity 17. The first driving member 31 and the second driving member 32 are both fixed to the first cavity 16. The cover plate 40 covers the second cavity 17. The sound emitting hole 13 penetrates the second cavity 17.

Further, referring to FIG. 1, the sound output hole 13 is located at the frame 10 near the diaphragm 20. The distance between the sound emitting hole 13 and the diaphragm 20 is smaller than the distance between the sound emitting hole 13 and the cover plate 40, so that the sound wave emitted by the diaphragm 20 is transmitted out of the frame 10 through the sound emitting hole 13. The number of the sound emitting holes 13 is plural. The plurality of sound output holes 13 are equidistantly arranged along the circumferential direction of the frame 10. The sound is emitted from the plurality of sound emitting holes 13 to reduce the sound resistance of the speaker 100 and increase the sound volume of the speaker 100.

Referring to FIG. 6, the present invention further provides a speaker device 200 including the speaker 100. The speaker device 200 further includes a box body 60 having a sealed sound cavity 61 and the speaker 100. It is fixed in the sealed sound cavity 61.

In this embodiment, the volume of the sealed sound cavity 61 is larger than that of the speaker 100. The sound wave emitted from the diaphragm 20 of the speaker 100 is transmitted to the sealed sound cavity 61 through the sound outlet hole 13, so that the sound wave oscillates back and forth in the sealed sound cavity 61, so that the box 60 vibrates and sounds, so that the user can receive sound.

Further, the box body 60 includes a top plate 62 and a bottom plate 63 disposed opposite the top plate 62, and a side plate 64 fixed between the top plate 62 and the bottom plate 63. The diaphragm 20 abuts against the top plate 62, and the distance from the side plate 64 to the frame 10 is greater than the distance from the bottom plate 63 to the frame 10.

In this embodiment, the cover plate 40 abuts against the bottom plate 63. That is, the distance from the bottom plate 63 to the cover plate 40 is smaller than the distance from the side plate 64 to the frame 10. The peripheral edge of the cover plate 40 is fixed to the inside of the frame 10, so that the distance from the bottom plate 63 to the frame 10 is smaller than the distance from the side plate 64 to the frame 10, so that the thickness of the box body 60 is sufficiently small. A sufficient sound transmission space is provided between the side plate 64 and the frame 10, so that after the sound wave is emitted through the sound outlet hole 13, it oscillates back and forth between the frame 10 and the side plate 64, so that the box 60 makes a sound.

In another embodiment, referring to FIG. 7, there is a gap h between the cover plate 40 and the bottom plate 63, and a distance H between the side plate 64 and the frame 10. The gap h is smaller than the distance H, so that the thickness of the box body 100 can be sufficiently small, and the acoustic resistance between the sound output hole 13 and the side plate 64 is reduced.

Further, referring to FIG. 8, a sound absorbing particle 70 is filled between the side plate 64 and the frame 10.

In this embodiment, the sound-absorbing particles 70 are completely filled between the side plate 64 and the frame 10. The sound absorbing particles 70 absorb the sound emitted from the sound outlet hole 13. The sound absorbing particles 70 absorb the sound waves and vibrate in the box body 60. The sound absorbing shell 70 hits the box body 60 to make the box body 60 vibrate Speak. Avoiding direct impact of sound waves on the box body 60 makes the sound of the box body 60 soft and enhances the bass effect of the speaker device 200. Since the sound absorbing particles 70 can be completely filled between the side plate 64 and the frame 10, after the sound waves are emitted through the sound emitting holes 13, they can be directly transmitted to the sound absorbing particles 70, so that the sound absorbing particles 70 can be directly The sound wave energy is transmitted to the box body 60, thereby improving the sound quality of the speaker device 200.

Further, the speaker device 200 further includes a mesh 80 covering the sound output hole 13. The mesh 80 may cover the opening of the sound emitting hole 13 in the outer peripheral side wall 11, or cover the opening of the sound emitting hole 13 in the inner peripheral side wall 12. The mesh cloth 80 covers the sound emitting hole 13 to prevent the sound absorbing particles 70 from entering the sound emitting cavity 50 and to prevent the sound of the speaker 100 from being affected. The mesh 80 covers the sound emitting hole 13 so that the sound-absorbing particles 70 can be completely filled between the side plate 64 and the frame 10 without the need to first encapsulate the sound-absorbing particles 70 and then store them in the sealed sound. The cavity 61 not only improves the sound quality of the speaker device 200, but also reduces the production cost of the speaker device 200.

Referring to FIG. 9, the present invention further provides a mobile terminal 300 including a casing 90 and a motherboard 91 fixed in the casing 90. The speaker device 200 is fixed to a bottom end of the casing 90. The first driving member 31 of the speaker 100 is electrically connected to the main board 91 and receives a current signal from the main board 91. The first driving member 31 of the speaker 100 can slide relative to the second driving member 32 and make the speaker 100 sound. It can be understood that the mobile terminal 300 may be a mobile phone, a tablet computer, a notebook computer, or the like.

A sound hole is opened through the outer peripheral side wall of the frame toward the inner peripheral side wall, and a sound wave generated by the vibration of the diaphragm passes through the sound output hole, so that the user receives sound. Because the sound hole is not opposite to the diaphragm, the side of the frame away from the diaphragm does not need to provide sound transmission space, which saves the use space, and the sound wave emitted by the diaphragm passes through the sound hole and the sound resistance is reduced. Smaller, users can receive larger sounds, improving user experience.

The above is the implementation of the embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the embodiment of the present invention, several improvements and retouching can be made. These improvements and retouching also It is regarded as the protection scope of the present invention.

100‧‧‧Speaker

10‧‧‧Frame

11‧‧‧ peripheral wall

12‧‧‧ inner peripheral side wall

13‧‧‧Sound hole

14‧‧‧Top

15‧‧‧ bottom

16‧‧‧ the first cavity

17‧‧‧Second cavity

200‧‧‧Speaking device

20‧‧‧ diaphragm

21‧‧‧ folds

30‧‧‧Drive element

300‧‧‧ mobile terminal

31‧‧‧first drive

32‧‧‧Second driver

321‧‧‧first magnet

322‧‧‧Second magnet

323‧‧‧pitch

33‧‧‧through hole

40‧‧‧ cover

50‧‧‧ vocal cavity

60‧‧‧Box

61‧‧‧Sealed sound chamber

62‧‧‧Top plate

63‧‧‧ floor

64‧‧‧Side

70‧‧‧ sound-absorbing particles

80‧‧‧ Mesh

90‧‧‧shell

91‧‧‧Motherboard

H‧‧‧distance

h‧‧‧ clearance

In order to explain the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments are briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. Technical personnel can obtain other drawings based on these drawings without paying any creative work. FIG. 1 is a schematic cross-sectional view of a speaker according to an embodiment of the present invention; FIG. 2 is another cross-sectional view of a speaker according to an embodiment of the present invention; FIG. 3 is a schematic cross-sectional view of a speaker according to another embodiment of the present invention; FIG. 4 is another schematic cross-sectional view of a speaker provided by an embodiment of the present invention; FIG. 5 is a schematic cross-sectional view of a speaker provided by another embodiment of the present invention; FIG. FIG. 7 is a schematic cross-sectional view of a speaker device provided by another embodiment of the present invention; FIG. 8 is another cross-sectional schematic view of a speaker device provided by an embodiment of the present invention; and FIG. 9 is a mobile terminal provided by an embodiment of the present invention Schematic.

Claims (10)

A speaker, wherein the speaker includes a frame, a diaphragm, and a driving element. The frame has an outer peripheral side wall and an inner peripheral side wall disposed opposite the outer peripheral side wall. A sound hole, the peripheral edge of the diaphragm is fixedly connected to the frame along the circumferential direction, the driving element includes a first driving member fixed to the diaphragm and a second driving member fixed to the frame, the first driving member It can vibrate relative to the second driving member to drive the diaphragm to vibrate to emit a sound wave, and make the sound wave pass through the sound hole. The loudspeaker according to item 1 of the patent application scope, wherein the first driving member is a coil and the second driving member is a magnet. The speaker according to item 1 of the scope of patent application, wherein the speaker further comprises a cover plate fixed to the frame, the cover plate is disposed opposite to the diaphragm, and a sound is formed between the diaphragm, the cover plate and the frame. Cavity, the sound emitting hole penetrates the sound emitting cavity. The loudspeaker according to item 1 of the scope of patent application, wherein the sound output hole is located at the frame near the diaphragm. The speaker according to item 1 of the scope of patent application, wherein the number of the sound output holes is plural, and the plurality of sound output holes are equidistantly arranged along the circumferential direction of the frame. A speaker device, wherein the speaker device includes the speaker according to any one of claims 1 to 5, and the speaker device further includes a box body having a sealed sound cavity, The speaker is fixed in the sealed sound cavity. The speaker device according to item 6 of the scope of patent application, wherein the box body includes a top plate and a bottom plate disposed opposite the top plate, and a side plate fixed between the top plate and the bottom plate, and the diaphragm is against the top In the top plate, the distance from the side plate to the frame is greater than the distance from the bottom plate to the frame. The speaker device according to item 7 of the scope of patent application, wherein a sound absorbing particle is filled between the side plate and the frame. The loudspeaker device according to item 8 of the scope of patent application, wherein the speaker device further comprises a mesh cloth covering the sound output hole. A mobile terminal, wherein the mobile terminal includes the speaker device according to any one of claims 6 to 8 of the scope of patent application.